Daniel c



f 0.0. COLBY.

' Heating and Fuel Device.

Patented-April 25.1865.

UNITED STATES PATENT O FICE.

DANIEL (J. COLBY, OF GLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO HIM SELF, D.WV. RAWSON, J. REDDINGTON, AND THOMAS I. HARRIS.

HEATING AND FUEL-SAVING DEV ICE.

Specification forming part of Letters Patent No. 47, 189, dated April25, 1865.

To all whom it may concern:

Be it known that I, DANIEL O. COLBY, of

Olaremont, in the county of Sullivan and State of New Hampshire, haveinvented certain new and useful Improvements in Attachments to Stovesand Funnels for Saving Fuel, which I denominate Coll ys Heating and FuelSaving Device, and I do hereby declare that the following is a full andexact description of the same, reference being had to the accompanyingdrawings, forming a part of this specification, in which- Figure 1 is aperspective View of the apparatus as applied to the tunnel of stoves.Fig. 2 represents a convenient way of attaching it to stoves that havetheir funnel come out at the top. Fig. 3 represents a side view of theinterior funnel and its immediate attachments; Fig. 4, a view of thedampers which regulate the flow of the heat and cold air; Fig. 5, one ofthe caps that go on to the ends of the large funnel or cylinder A.

Letter A represents a cylinder forming a part of the funnel leading fromthe stove.

Letter B represents a cylinder of less diameter, and is placed so as tostand in the center of the cylinder A, and extends somewhat beyond ateach end, as may be seen in Fig. 1.

Letter 0 represents the stove, one end broken off.

Letter D represents the funnel leading from the stove 0.

"regulate the flow of cold air.

Letter 7' represents a space open in the central funnel, B, and is forthe purpose of letting the hot air from this interior funnel out intothe room where the stove is when such is desired.

Letter 70 represents an opening in the inteiror funnel, B, just belowthe lower end of the cylinder A, and is to allow the cold air near thefloor to pass up through this interior funnel, and, being heated on itspassage, to be thrown out at j.

Letters l l are caps, one on each end of the cylinder A.

Letters m m are short handles or levers attached t0 the dampers H and Ito turn them by.

Letters n n are arrows indicating the direction of the currents of air.The same letters represent corresponding parts in the different figures.

The object of my invention is to secure a ready way of utilizing theheat that passes off so rapidly in the center of the funnel, which bythe usual arrangements is almost entirely lost, and to provide such astructure and arrangement of parts that it may be made operative eitherupon the air in the room where it stands, or upon the air in anadjoining room, or in both at the same time.

To enable others to makeand use my in vention, I will describe itsconstruction and mode of operation.

The cylinder A may be made as in Fig. 1, or it may be a part of anordinary funnel. The interior tube, B, I make of common funnel-iron,with the joints very tight; the cold-air pipe F of iron or tin. The pipeGr should be made of galvanized iron, as being the best material toconduct hot air without radiating the heat.

The dampers H and I may be made of tin,

galvanized iron, or Russia iron, and in form as seen in Fig. 4.

In order not to disturb the free passage of the smoke in the outercylinder, A, the inner one, B, should not in its diameter be more thantwo-thirds that of A. The cold-air pipe constant and very effectual. Itis desired to make use of this interior funnel to heat the room in whichit stands-the dampers are This process is turned as in Fig. 3, thusclosing the tube F and the pipe G, and opening the orifices j and k.Arranged thus, the cold air enters at k, and, passing up the funnel B,is poured out wellheated at 9.

The arrangement of parts as seen in Fig. 2 is the one most effectualwhen the funnel leads off from the top of the stove. In this case, somuch of the funnel B as passes up through the stove should be cast-iron.

The great economy of fuel exhibited by the use of my invention might atfirst seem strange,but when we call to mind the fact that the heated airin a stove-funnel is not only hottest at the center, but rushes alongwith much greater rapidity, like the current of a river, than at thesides, then we are prepared to see how, in accordance with the laws ofnature, do I proceed in this arrangement of 1111118.

The great convenience of being able to warm a sleepiug-apart1nent,astudy, or parlor without having a stove therein, and that in houseswhich are not provided with furnaces, will, we think, be very highlyprized by the public, and economy in fuel in these days is of muchimportance.

By the insertion of the funnel 13 within the outer one, A, I not onlyadd to the radiating surface all of the interior of this inner funnel,but by compelling, as I do by this arrangement, the vapor and smoke fromthe stove to seek its passage to the chimney through the narrow spacebetween the two funnels A and B, the former is heated to a much greaterextent than otherwise, and is consequently radiating much more caloric.To such an extent is this true that the inner pipe, B,may be connectedby means of the tube G with an adjoining room, and sufficient heatcarried away in this manner to supply such adjoining room, even in coldweather, without any other appliance, and this without any necessityarising for increasing the quantity of fuel over what Would be requiredto heat the one room alone Without this arrangement of mine.

When this invention of mine is used to apply to one room only, then isthe quantity of fuel decreased one-half.

Now, I do not claim, broadly, the insertion of one pipewithin anotherfor the purpose of utilizing heat 5 but VVhat I do claim as myinvention, and dcsire to secure by Letters Patent, is-

The arrangement of the damper H, the pipe G, and the orifice j on theupper end of the funnel B, the damper I, the pipe F, and the orifice kon the other end, substantially as described, and the combination ofthis funnel B, thus provided, with the outer funnel, A, and the stove 0,one or both, as and for the pur poses set forth.

' DANIEL O. COLBY.

Witnesses (3. S. 'PARKHURST, JoNAs WHITE.

